The functional groups present in the filler can interact with the XIBOND® Coupling agent to create optimal surface tension in the composite materials.

Coupling agents improve the bonding between a polymer matrix and the filler surface. The addition of XIBOND®coupling agents is critical to achieving optimized properties in composite materials.

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Composite materials consist of a polymer matrix in which fillers are dispersed. Common fillers in the polymer processing industry include glass fibers, natural fibers and carbon fibers. These fibers are typically treated with a chemical substance to improve their affinity with the polymer matrix. Bonding in these composites systems can be further optimized with the addition of a Coupling Agent to chemically bond the filler and the polymer matrix.

The XIBOND® range offers multiple coupling agents with a range of reactive compatibilizers. These contain functional styrenics with Maleic Anhydride (MA) functionality and Glycidyl methacrylate (GMA) functionality. The functional groups in the XIBOND® coupling agent range can interact with the reactive end groups – such as -OH and -NH2 – present in the filler. Interaction between the polymer matrix and the filler depends on either size or the end groups present in the filler. Use the selector tool to find out which solution in the XIBOND® portfolio is right for you. 

Benefits Coupling Agents

  • Optimized blend morphology
  • Improved impact properties
  • Decreased viscosity
The functional groups present in the filler can interact with the XIBOND® Coupling agent to create optimal surface tension in the composite materials.